121340424115 has 4 divisors (see below), whose sum is σ = 145608508944. Its totient is φ = 97072339288.

The previous prime is 121340424103. The next prime is 121340424131. The reversal of 121340424115 is 511424043121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121340424115 - 2¹⁷ = 121340293043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12134042407 + ... + 12134042416.

It is an arithmetic number, because the mean of its divisors is an integer number (36402127236).

Almost surely, 2^121340424115 is an apocalyptic number.

121340424115 is a deficient number, since it is larger than the sum of its proper divisors (24268084829).

121340424115 is an equidigital number, since it uses as much as digits as its factorization.

121340424115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24268084828.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 121340424115 its reverse (511424043121), we get a palindrome (632764467236).

The spelling of 121340424115 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty-four thousand, one hundred fifteen".